Abstract
Iris cangshanensis X. F Jiang, Y. Yang, J. F Liu & Y. P Xie, 2024, is a newly described perennial herb with a small population size. This study utilized Illumina sequencing technology to construct the complete chloroplast genome of Iris cangshanensis. The chloroplast genome is 154,008 base pairs (bp) in size with 37.32% overall GC content, consisting of an 83,559 bp (35.35%) large single-copy region (LSC), a 17,937 bp (30.56%) small single-copy region (SSC), and a pair of 26,256 bp (42.78%) inverted repeat (IR) sequences. The chloroplast genome has 130 genes, including 84 protein-coding genes, 38 tRNA genes, and eight rRNA genes. A maximum-likelihood (ML) phylogenetic analysis based on the plastomes of 15 Iridaceae species revealed that Iris cangshanensis is closely related to the other 12 species within the Iris genus. Owing to the limited chloroplast genome sampling of the genus Iris in the present study, determining the position of Iris cangshanensis in this genus is difficult. Overall, the chloroplast genome reported in this study will be useful for further taxonomic and evolutionary studies of Iris. This study constructs the complete chloroplast genome of Iris cangshanensis. The chloroplast genome is 154,008 base pairs (bp) in size with 37.32% overall GC content, consisting of an 83,559 bp (35.35%) large single-copy region (LSC), a 17,937 bp (30.56%) small single-copy region (SSC), and a pair of 26,256 bp (42.78%) inverted repeat (IR) sequences. The chloroplast genome has 130 genes, including 84 protein-coding genes, 38 tRNA genes, and eight rRNA genes. A maximum-likelihood (ML) phylogenetic analysis based on 15 Iridaceae species revealed that Iris cangshanensis is closely related to the species within the Iris genus.